61253615 has 8 divisors (see below), whose sum is σ = 73589040. Its totient is φ = 48946432.

The previous prime is 61253609. The next prime is 61253639. The reversal of 61253615 is 51635216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61253615 - 2¹² = 61249519 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1949 + ... + 11238.

It is an arithmetic number, because the mean of its divisors is an integer number (9198630).

Almost surely, 2^61253615 is an apocalyptic number.

61253615 is a deficient number, since it is larger than the sum of its proper divisors (12335425).

61253615 is a wasteful number, since it uses less digits than its factorization.

61253615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14121.

The product of its digits is 5400, while the sum is 29.

The square root of 61253615 is about 7826.4688717199. The cubic root of 61253615 is about 394.1945130238.

The spelling of 61253615 in words is "sixty-one million, two hundred fifty-three thousand, six hundred fifteen".